- Some Dragons sleep at night, curled up on the ground.
- Spriggans will slave nearby animals to fight you with increased strengh/speed and detection abilities.
- Giants buy cattle (ok not really but they do trade for them)
- there are atleast 7 pitfall traps in Skyrim in various ruin types for various reasons.
- Khajiit Traders Travel in real time from place to place, and don't just randomly spawn at their locations, they can lose followers.
- Markarth....is not all it seems...her inhabitants I mean.
- There is a spell called Bound Arrow that lets you shoot arrows out of your Hands....
- Dragons are very good at Tracking you, even if your using an invisibility Potion.
- Taking shelter into a Wilderness Building will make Dragons wait outside patiently.
- the Hanging Bones are Alarms, do not trigger them.
- Firing arrows at a wall near enemies will distract them, allowing you to move past if needed.
- Skyrim is ****ing awesome.
There is just so much goodness in this game, I can confirm several of these points
- when faced with multiple enemies (such as bandits in a fort on the road I want to travel along) I often fire an arrow at a wall to get their attention if I don't initially have a clear line of sight to shoot any of them - the nearest ones will head towards where they heard the arrow hitting the wall, and I can pick them off once they come into range.
- "bone chimes" alert everything in the near vicinity, including getting draugr out of their coffins - useful if you have a high sneak skill, use the chimes to get the draugr out of coffins and then sneak around picking them off
- you can sneak up on a dragon in its roost, it WILL detect you once you hit it, they have like superpowered vision, but that first shot gets the sneak damage bonus and can help a lot
- I have traded with Khajiit on the roads between towns (you can trade with the caravan vendor when they are on the move), they move from town to town in real time - but I always enjoy seeing the light from their camp fire as I approach a town if they have got there before me.
Other cool things I have noticed:
- The travelling bard that you can meet in the wilderness stops at taverns to have a drink
- I turned in a bounty with a Jarl, as I came out of the Jarl's longhouse I saw a courier running into the nearby tavern, lo and behold when I spoke to the innkeeper they told me that a new bounty letter had been delivered. This could have just been random coincidence, but it seemed pretty cool at the time!
- An "Imperial patrol + Stormcloak prisoner" random encounter spawned for me on the road near Winterhold as I was approaching the town - the Winterhold town guards ran towards and fought the Imperial soldiers, killing them amongst the derelict buildings and the Stormcloak prisoner ran to his freedom.
It's little details like this that take it to the next level.